Add section on identifying and quantifying disproportionate impacts

[NMartorano]

programs are struggling with how to identify disproportionate impacts of their work which is a requirement for the outreach within AB 2108. I found this paper but it would be something else to consider adding to our handbook especially if we link to AB 2108 resources or compliance.

Potential resources to leverage: https://cawaterboards-my.sharepoint.com/:b:/r/personal/nicholas_martorano_waterboards_ca_gov/Documents/Microsoft%20Teams%20Chat%20Files/Equity%20Calculations%20Explained.pdf?csf=1&web=1&e=xFIfxc